baber/WOPTO huggingface dataset:
Patent GB-883428-A (GB)
Title: Improvements in and relating to magnetic recording mediums
Filed: 1960-05-02
Abstract: 883,428. Magnetic structures. INTERNATIONAL BUSINESS MACHINES CORPORATION. May 2, 1960 [May 20, 1959], No. 15287/60. Class 38 (2). A magnetic recording medium comprises an iron base Fe,a non-magnetic iron oxide layer FeO and a magnetic iron oxide layer Fe 3 O 4 . Iron is heated in a steam/oil atmosphere in a furnace to a temperature of 1060 F.-1140 F., removed, and cooled in air, the cooling over the range 1060 F. - 750 F. being greater than 8 F. per minute. The Specification discloses a known arrangement of a coating of Fr 3 O 4  on iron formed by heating in a steam/air atmosphere and cooling slowly.
Patent GB-1378439-A (GB)
Title: Stopper
IPC: A47J41/00
Filed: 1972-04-04
Abstract: 1378439 Container closures JONKOPINGS VACUUMINDUSTRI AB 4 April 1972 [10 May 1971] 15381/72 Heading B8T A stopper 1 for a vacuum flask has ribs 11 which support a ring body 12 carrying a thread 13 that co-operates with thread 26 on the neck 23 of a jacket 20 which surrounds a vacuum container 16. When liquid is to be poured from the vacuum flask, stopper 1 is partially unscrewed until a conical portion 3 is disengaged from an inner surface 32 of the vacuum container 16. Liquid can then be poured through passages 15 which are formed between cylindrical portion 6, ribs 11 and the internal surface of the ring body 12. Instead of threads 13, 26 there may be quick threads or a bayonet closure.
Patent GB-620151-A (GB)
Title: Improvements in and relating to brushes and the like and their method of manufacture
IPC: A46D1/00
Filed: 1946-05-22
Abstract: 620,151. Rubber brushes; forms of bristle; brush manufacture. EMSA-WORKS & HERBERT FOOT APPLIANCE, Ltd., and BROWN, J. W. May 22, 1946, No. 15488. [Class 19] A stippling brush is formed in one piece of rubber and comprises a solid flat stock 1, having bristles 3 integral therewith on one face thereof, spaced lugs 4 integral therewith on the opposite face thereof and a bar-shaped handle 2 supported by said lugs. The bristles preferably consist of flat blades of rectangular cross-section arranged in rows, each bristle being substantially at right angles to adjacent bristles in the same or adjacent rows or the adjacent bristles may be at any angle to one another. Further, the bristles may taper towards their tips (as shown) or may be of a triangular or circular cross section. The brush is preferably made by moulding and vulcanizing rubber in a mould with its interior shaped to form the handle, lugs and stock, the wall of the mould forming the undersurface of the stock being provided with slots into which the unvulcanized rubber is extruded during the vulcanizing process to form the bristles integral with the stock. The whole brush is preferably made from rubber having petrol-resisting qualities.
Patent GB-478939-A (GB)
Title: Improvements in or relating to television and like transmitters
IPC: H04N5/217
Filed: 1937-06-04
Abstract: 478,939. Television transmitters. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. June 4, 1937, No. 15569. Convention date, June 9, 1936. [Class 40 (iii)] The picture surface 14 of a scanning-tube 13, which gives a distribution of disturbing signals varying with the mean brightness of the picture, is subjected to uniform diffused illumination in addition to the optical image of the subject 10, thus permitting compensation or reduction of the effects of the disturbance by the addition of a signal which need not be varied as the mean brightness varies. The diffused ilhunination, from a source 16 may be so controlled by a cell 20, which is exposed to illumination by the subject, that the total illumination on the surface 14 remains constant. The subject is projected through a semi-transparent plate 18, which is oblique to the axis of the light and reflects the diffused light to the surface 14. Alternatively, the reflector is small and obscures a small part of the beam which projects the subject on the surface, Fig. 4 '(not shown). According to a modification, the subject is thrown on a projection surface, which is simultaneously irradiated by the diffused light and is projected on the picture surface, Fig. 2 (not shown).
Patent GB-698806-A (GB)
Title: Improvements in or relating to attachments for use with automatic apparatus for playing gramophone records
Inventor: RAE ALEXANDER JAMES
IPC: G11B17/14
Filed: 1950-06-22
Abstract: 698,806. Automatic gramophones. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 20, 1951 [June 22, 1950], No. 15572/50. Class 40 (ii). In an automatic gramophone of the kind in which records with standard size centre holes are supported on a centre post, an adaptor is provided for attaching to the said centre post whereby records having centre holes of the order of 1 ¢ in. diameter may be accommodated. In the embodiment described, the adaptor is intended for use with the centre post of Specification 617,864, the upper part 17, Fig. 1, of such shaft being removed and replaced by the adaptor shown in Figs. 2 and 3, which comprises a boss 22 having a circular disc 24 and a pin 31 eccentrically secured thereto. Freely mounted on the pin 31 is a disc 38 having a turned up lip 39 which in its maximum counterclockwise position, as viewed from beneath (Fig. 3), just enters a crescent-shaped cut away part 23 of the boss 22. The disc 38 is also provided with an aperture 43 which is engaged by the upper projecting part 16 of the centre post sleeve 15. Records placed upon the boss 22 rest on a ledge 25 formed by the disc 24. During a record releasing operation, the sleeve 15 rotates the disc 38 clockwise, as viewed in Fig. 3, against the tension of a coiled spring 50, so that lip 39 unseats the lowermost record from the ledge 25 to fall to the turntable. The centre post is also fitted with an adaptor 55, Fig. 4, to locate records on the turntable.
Patent GB-568452-A (GB)
Title: Improvements in or relating to the manufacture of electric vacuum tubes
IPC: H01J19/66
Filed: 1943-09-24
Abstract: 568,452. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd., and MOSCRIP, W. R. Sept. 24, 1943, No. 15689. [Class 39 (i)] A stem I of fusible material for an electric vacuum tube has a flat press 3 formed at one end and a coaxial exhaust tube 2 open at both ends, is sealed through the centre of the press and at least three conductors are sealed. through the stem. The press may have a number of radiating flat portions forming a star configuration. These may be formed by the pressure of a number of symmetrically arranged forming hammers, a core of carbon or non-expanding alloy being inserted in the exhaust tube to prevent it being closed by this pressure. The end of the stem bank may be preformed into triangular, square, or polygonal cross-section to facilitate this operation. In another method, a ball or roller of carbon or metal is rolled round in contact with the inner surface of the heated exhaust tube to seal it to the stem.
Patent GB-666219-A (GB)
Title: Improvements in or relating to protective apparatus for use by operators of electriccutting and welding equipment
IPC: A61F9/06
Filed: 1948-06-10
Abstract: 666,219. Eye protectors. GOODWIN, C. P. June 10, 1949 [June 10, 1948], No. 15726/48. Class 97 (i).  Relates to apparatus for use with electric arc welding or cutting equipment, comprising a face mask 1 having a coloured glass or glasses 3 movably mounted therein so as to assume either an operative position in which the eyes of a wearer are covered, or an inoperative position, and automatic means for moving said glass or glasses, the automatic means for moving the glass or glasses into the operative position comprising an electric circuit which includes the electrodes or the electrode E and the work W and electromagnets B and the automatic means for moving the glass or glasses into the inoperative position comprising a spring or springs 8, the arrangement being such that the glass or glasses are moved into the operative position and the full welding current is simultaneously switched on so that the welding or cutting operation can commence at the will of the operator when his eyes are already protected. According to the invention the electromagnets B are connected in series with a variable resistance R1 and a switch A, the latter being closed preparatory to the striking of the arc by an electromagnet C1 and held closed by a solenoid C2 as long as the arc is established. The solenoid C1 may be connected through a variable resistance R2 with the generator G and also with the electrode E, whereas solenoid C2 may be connected with the electrode and through a switch D with the generator, switch D being closed after switch A has closed. The coloured glass or glasses 3 may be mounted in frames 3a connected to the armatures of the electromagnets B, said frames being slidable in guides 4 so that the glasses may be moved into positions overlying plain glasses 2a seated over slots 2 in the mask 1. The armatures of the electromagnets B may be encircled by the springs 8.
Patent GB-493505-A (GB)
Title: Improvements in struts for cycles and similar vehicles
IPC: B62H1/00
Filed: 1938-05-26
Abstract: 493,505. Cycle supports. RYLANDER, A. J. E. May 26, 1938, Nos. 15800, 15801, and 15802. Convention dates, May 28, 1937, July 13, 1937, and Feb. 16, 1938. [Class 136 (i)] In a cycle support of the type comprising a rod or strut adapted to be turned down into engagement with the ground and to be raised automatically into an upright position by spring action when released, the support is provided with a retaining or locking device to hold it in operative position; the locking-- device may be automatically actuated, or may be controlled by hand or foot, and may be such that the support can be locked in different angular positions according to the inclination of the ground. In the form shown in Figs. 1-4, the strut 24 is provided with a horizontal arm 22 journalled in bearings formed by end plates or flanges 18, 20 on a plate 10, which is secured to the chain-stay 16 by screws 12 and a back plate 14. A torsion spring 26 in the arm 22 is secured by pins 28, 30 respectively to the arm 22 and to a cap 34 secured to the end plate 18, so as normally to hold the strut in the raised position shown in Fig. 1. The end plate 20 is formed with a toothed sector 36 adapted to be engaged by a tooth 38 secured to the strut 24, as by a removable clamp 52, 56, whereby the strut 24 is held in the lowered operative position at the required inclination. When the strut 24 is disengaged from the ground by moving the cycle from a tilted to a vertical position, the arm 22 of the strut drops into the lower part of an elongated bearing opening 50 in the end plate 20, thus disengaging the tooth 38 from the sector 36, and allowing the spring 26 to swing the strut into the raised position. In a modification, a blade spring tends to move the arm 22 into the lower part of the opening 50. In a further modification, a reaction component of the spring 26 is utilized to press the arm 22 into the lower part of the opening 50, either automatically or by external manipulation under the control of a setting-lever. In another modification, the tooth on the strut is disengaged from the toothed sector by endwise movement of the horizontal arm 22 by a hand or foot operated bell-crank lever, which may be locked in position by a thumbscrew.
Patent GB-853362-A (GB)
Title: Improvements in or relating to pulse generator circuits
Inventor: ODELL ALEXANDER DOUGLAS
IPC: H03K3/30
Filed: 1959-05-08
Abstract: 853,362. Pulse generating circuits; pulse modulation circuits. STANDARD TELEPHONES & CABLES Ltd. May 8, 1959, No. 15879/59. Classes 40(5) and 40(6). Fig. 1 -shows a timing circuit in which a constant current 1 is applied from sources 4, 5 in such a direction as to unblock rectifier 8. Initially when switch 11 is open all of the current I flows through rectifier 8. When the switch 11 is closed a current i flows in primary winding 2 and increases linearly, Fig. 2 B (not shown), until it is equal to current I, rectifier 8 then is blocked cutting off source 4. Thus a rectangular pulse is generated at terminal 12, Fig. 2D (not shown), the duration of which is determined by the values of the inductance of winding 2, resistor 9, and the potentials V1, V2 so that it may be varied by adjustment of resistor 9. As shown in Fig. 3 the functions of the switch 11 of Fig. 1 are performed by a PNP transistor 13 which is triggered by a positive input pulse applied to the emitter at terminal 16 which blocks rectifier 14 and causes transistor 13 to conduct thus diverting part of the current flow from sources 4, 5 from rectifier 8 into the primary winding 2. When the trigger pulse at terminal 16 ceases the transistor 13 is maintained in a conductive condition by virtue of the voltage applied to its base from the secondary of transformer 3 the current flow through primary winding 2 increases linearly until after a given time interval rectifier 19 conducts and the base potential of transistor 13 rises until the transistor is cut off. A rectangular output pulse is produced across the load resistor 20 in the collector circuit the duration of which is determined by the components of the circuit and may be adjusted by variation of resistor 9. Fig. 5 shows a modification for producing a modulated pulse train derived from source 31 in dependence upon a modulating signal applied across the primary of transformer 28. It is shown in connection with Figs. 3 and 5 that the output pulse duration varies linearly with the potential V2 of source 5 so that the injection of a control potential from transformer 28 in series with the source enables the duration of the output pulse to be varied in dependence upon the amplitude of the control potential. Adjustable resistor 26 enables the triggering threshold of the circuit to be controlled by varying the base to emitter potential of the transistor in the quiescent condition.
Patent GB-1460556-A (GB)
Title: Impact tool for generating percussive forces
IPC: E21B1/26
Filed: 1975-04-17
Abstract: 1460556 Impact tools HYDROACOUSTICS Inc 17 April 1975 [24 April 1974] 15893/75 Heading B4C A hydraulic pressure tool comprises a housing 300, a bore 308 therein and a piston 310 in the bore, the piston having faces 326, 328 the face 326 being the driving force and of larger area, a sliding valve mechanism 334 surrounding the piston and alternately covering a supply port 336 and return port 338, an accumulator 354 in the supply line connected through a chamber 352 to supply port 336 to store energy for the downward stroke of the piston. In use the passageway 352 is always connected to the space 332 below the piston to provide a restoring force and is alternately connected to the space 330 above piston 320 to provide the driving force. Valve means 340 is moved by rings 342, 344 on the piston rod. Return fluid passes through accumulator 366 which helps even out the flow thereof. A flushing medium channel is provided axially of the piston and drill bit.
Patent GB-1099873-A (GB)
Title: Improvements in or relating to electron discharging devices
IPC: H01J3/02
Filed: 1965-04-14
Abstract: 1,099,873. Travelling wave tubes. SIEMENS A.G. April 14, 1965 [April 15, 1964], No. 15908/65. Heading H1D. An electron discharge device, e.g. a travelling wave tube, has a cathode assembly which includes a focusing electrode 12 mounted within two cupshaped screening cylinders which surround the assembly, the inner screening cylinder 1 forming a first accelerating anode and extending to surround the connecting conductors from the cathode assembly to a terminal lead - through assembly 2, adjacent to which the inner screening cylinder is conductively connected to a sealing ring member having an aperture coaxial with the axis of the inner screening cylinder in which the terminal lead - through assembly is mounted, and the outer screening cylinder 8 forming part of a second accelerating anode and being secured to the sealing ring member via a hermetically sealed ceramic tube 7 coaxially surrounding part of the inner screening cylinder. In assembly, the cathode and focusing electrode mounted upon a guide tube 13, slide within the inner screening electrode so as to position the aperture of the focusing electrode relative to the aperture in the first accelerating anode.
Patent GB-185827-A (GB)
Title: Improvements in or relating to tube expanders
IPC: B21D39/04
Filed: 1921-06-09
Abstract: 185,827. Kneller, W. H. June 9, 1921. Tube-expanders. - In a tubeexpander of the roller-head type for expanding the tubes into the tube-plates of fire-tube boilers, the roller-head is carried by a long hollow rod so that the tool may be inserted from the smoke-box end to expand the tubes at the fire box end. The roller head A, which is provided with radial slots to receive tapered skew rolls X with rounded ends is secured to or formed integral with the hollow rod F, which is screw-threaded at 0 and furnished with a thrustplate P held in place at the end of the tube by an adjustable selflocking stop-nut consisting of a split nut Q and internally tapered collar S. The rolls are expanded and the tool rotated, by a tapered mandrel G provided with a handle N, a spring T being secured to the mandrel and engaging the end of the hollow rod so as to withdraw the mandrel to enable the tool to be removed after expanding. The rolls are inserted into the head through the aperture in the end thereof. According to the Provisional Specification, a ball thrust bearing may be arranged between the tube and the stop-nut and the apparatus may be employed to expand the tubes of water-tube boilers. Reference has been directed by the Comptroller to Specifications 2995/80, 26502/97, and 6768/98, [all in Class 99, Pipes &c.].
Patent GB-1246213-A (GB)
Title: Photographic apparatus
Inventor: BABCOCK DAVID LOCKMAN
IPC: G03B17/24
Filed: 1969-03-27
Abstract: 1,246,213. Photographic cameras. EASTMAN KODAK CO. March 27, 1969 [March 27, 1968], No. 16034/69. Heading G2A. A camera or cartridge has, housed in a separate chamber, a member freely movable under gravity, such that in making an exposure the disposition of the member within the chamber is recorded on the edge of the photographic material, so indicating the orientation of the camera at the time. Fig. 3A shows the camera housing 10, film cartridge 12, and hinged cover 14. The freely movable member is a disc or ball 80, in a diamond-shaped chamber 74 formed in the housing 10, and having windows 76, 78. Of the light rays entering the camera to effect an exposure on the film 56, a part 82 will pass through chamber 74, and through a separate small aperture 68 in the cartridge to form an image of chamber 74 and disc 80 on a marginal portion of the film. As the camera is oriented in different positions with respect to the ground, gravity causes disc 80 to take up correspondingly different positions in chamber 74. When developed, the image of disc 80 and chamber 74 gives an indication, as shown in Fig. 6, of the orientation of the camera. The disc and chamber may be located in the cartridge itself, instead of in the camera housing.
Patent GB-1322150-A (GB)
Title: Through-flow polarographic analyser
IPC: G01N27/48
Filed: 1972-04-07
Abstract: 1322150 Electro-chemical analysis VYZKJMNY USTAV ORGANICKYCH SYNTEZ 7 April 1972 [9 April 1971] 16051/72 Heading G1N A through-flow polaro-graphic analyser has a by-pass passage 7 into which a major portion of the flow is diverted by a baffle-plate 2 in the inlet passage. The portion passing under the divider plate 3 passes into the cell with a dropping mercury electrode 6. The cell is provided with U-traps for the mercury and sample outlets. As in Specification 1296770.
Patent GB-125881-A (GB)
Title: Improvements in the Re-facing of Valve Disc Plates and Valve Seats for Compressors, Pumps and the like.
Inventor: ALLEN JOSEPH JAMES
IPC: B24B15/00
Filed: 1918-10-03
Abstract: 125,881. Allen, J. J. Oct. 3, 1918. Disk apparatus; work-holders.-A device for refacing disk valves and valve seats consists of an emery disk or a flat disk H screwed to a handle L and having stretched on it an emery sheet secured by a spring ring F. A nut K is used to enter the hole in the valve and seating. A holder for the valves comprises a flat disk A having screw pins C engaging recesses in the valves to prevent them from rotating, while pointed legs D prevent the disk itself from rotating.
Patent GB-656793-A (GB)
Title: Improvements relating to protective liners for autoclaves
IPC: B01J3/00
Filed: 1948-06-15
Abstract: <PICT:0656793/III/1> <PICT:0656793/III/2> An autoclave comprising an outer shell 1 with a deformable liner 10 of metal or plastic corrosion-resistant material has spacing means 4, 6 between the shell and the liner and vents 11 provided through the shell near the spacing means for the escape of trapped fluid when the liner is expanded against the outer shell by internal pressure.  The vents further serve as a means of detecting a leakage in the liner.  In a lead-lined container the spacing means may comprise tack-welded half-round ribs 4 with channels 5 in communication with the vents 11 and a wire mesh 6 tack-welded intermediate of the ribs, but either the ribs 4 or the wire mesh 6 may be omitted.  The ends of the liner 10 are folded down and augmented by molten lead in flanges 2 on the ends of the vessel.  The vents 11 may be replaced by grooves in the end faces of the shell under the lined end cap 3.  The autoclave with a lead liner is particularly suitable for the synthetic manufacture of urea from carbonic acid gas and ammonia.
Patent GB-946492-A (GB)
Title: Improvements in or relating to telegraph systems
Inventor: WHEELE DOUGLAS WALTER EDMUND
IPC: H04L1/00
Filed: 1961-05-03
Abstract: 946,492. Telegraph systems. HER MAJESTY'S POSTMASTER-GENERAL. June 29, 1962 [May 3, 1961], No. 16097/61. Heading H4P. A telegraphic transmission system is characterized in that the bits which constitute a character are " squeezed " together in time and in that a parity bit is inserted in the resulting space in the original character period. Thus the first six bits (including the start bit) of the 7¢ unit start/stop character shown in Fig. 1 are sampled by clock pulses 19, which occur at a slightly higher frequency than the original bit frequency, to produce the first six bits of a modified character, Fig. 3, then a parity bit 26 is inserted, and finally the stop bit is added. Thus the modified character shown in Fig. 3 is of the same overall duration as the original character but it contains a parity bit. A logical circuit (Fig. 2, not shown) is described for effecting this modification and a further logical circuit (Fig. 4, not shown) is described for recreating the original signal from the modified form and for producing an error indication if the parity check fails.
Patent GB-821106-A (GB)
Title: Improvements in or relating to radiographic apparatus
Inventor: BRYER ROBERT FRANK
IPC: H05G1/32
Filed: 1956-05-24
Abstract: 821,106. Automatic control systems for X-ray apparatus. GENERAL ELECTRIC CO. Ltd. May 24, 1957 [May 24, 1956], No. 16145/56. Class 38 (4). In radiographic apparatus means responsive to the radiation emerging from a subject in front of an X-ray tube controls the voltage applied to the anode of the tube. In a mass radiography unit, X-rays passing through a subject give a picture on a fluorescent screen which is photographed and also influences a photo-multiplier tube 6, Fig. 2, to produce across a resistor 8 a voltage dependent on the intensity of illumination. This voltage is applied through a valve amplifier 15 to operate relays such as MR and LR in sequence as required until the voltage applied to the anode of the X-ray tube (not shown) is reduced sufficiently by changing tappings on an autotransformer (not shown) to give a picture of the desired contrast with varying subjects. Tube 6 also charges a condenser 7 until its voltage, representing the integral of light intensity, is sufficient to operate a relay 12 which disconnects the anode supply to the X-ray tube and thereby determines the exposure time. Condenser 7 is discharged before each exposure by a switch 14. Use of saturable reactors instead of valves is referred to.